On Tue, Apr 15, 2014 at 7:07 AM, Milan Bouchet-Valat <nalimi...@club.fr>wrote:
> Le lundi 14 avril 2014 à 13:59 -0400, Hanze Zhang a écrit : > > Hi, > > > > I want to do logistic regression based on a complex sample design. I used > > package survey, but when I ran svyglm, an error message came out: > > Error in onestrat(x[index, , drop = FALSE], clusters[index], > > nPSU[index][1], : > > Stratum (16) has only one PSU at stage 1 > > > <snip> > > How to solve this issue? Thank you. > You need to merge manually the stratum with only one PSU with another > stratum. See 3.2.1 in http://books.google.fr/books?id=L96ludyhFBsC > (look for "single" in the whole book to find it). > > Or set options(survey.lonely.psu) to one of the other values. But merging strata is probably better. -thomas -- Thomas Lumley Professor of Biostatistics University of Auckland [[alternative HTML version deleted]]
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